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Finding the Fourth Proportional to 81,654.48, 122,378.04 and 44,744.40

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Solution

The fourth proportional to 81,654.48, 122,378.04 and 44,744.40 is: 67,059.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,654.48 : 122,378.04 = 44,744.40 : x
  2. Step 2: Convert to fraction form
    81,654.48/122,378.04 = 44,744.40/x
  3. Step 3: Cross multiply
    81,654.48x = 122,378.04 × 44,744.40
  4. Step 4: Simplify right side
    81,654.48x = 5,475,731,972.98
  5. Step 5: Solve for x
    x = 5,475,731,972.98/81,654.48
  6. Step 6: Final answer
    x = 67,059.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.